A Mapleton woman was killed Thursday when hit by a truck while jogging and a Salt Lake man was killed early Friday in a motorcycle accident.

Killed was:Shauna Miles, 39, Mapleton.

As of press time Friday, police were not releasing the name of the Salt Lake man pending notification of next of kin. Three others were also hospitalized from injuries suffered in the motorcycle accident.

Miles and a friend were jogging side by side on the Utah County road of 750 East near 3200 South just west of Springville about 6:20 a.m. Thursday when a northbound Chevrolet pickup driven by Reid Condie, 20, of Springville struck her from behind.

"He hit her as he went by. He said he didn't see her until the last moment. He barely missed her friend," said Utah County Sheriff's Lt. Ron Fernstedt.

Miles, who jogged most mornings with a group of Springville women, was running with the traffic and not against the traffic as police recommend. The accident occurred in an area called the West Fields near the IPP rail yard.

In West Jordan, two motorcycles, each carrying a man and a woman, crashed Friday morning near the intersection of 7800 South and U-111, said police Lt. Julie Stringer.

The motorcycles were westbound on 7800 South about 3 a.m. when they missed the stop sign at U-111, where 7800 South dead ends, Stringer said. The men apparently were best friends and out for a ride together, she said.

The motorcycles, which Stringer characterized as fast-moving "bullet bikes," left the roadway and ended up in a large gravel pit on the west side of U-111, she said.

None of the four riders was wearing a helmet.

A 20-year-old Salt Lake man, who had just owned his motorcycle for three days, was killed. His female passenger was critically wounded and transported by medical helicopter to University Hospital.

The second couple, a 25-year-old man and his 20-year-old female passenger, were not seriously injured. They were able to crawl out of the pit and flag down a passing car. The motorist took them to the Kennecott Copper Mine guard station, where they called for medical help.

Salt Lake County Fire paramedics transported the second couple to Jordan Valley Hospital.

Stringer said the intersection of 7800 South and U-111 is not well lighted, but warning signs are posted.